JPS55161001A - Production of steel powder for powder metallurgy - Google Patents
Production of steel powder for powder metallurgyInfo
- Publication number
- JPS55161001A JPS55161001A JP6827379A JP6827379A JPS55161001A JP S55161001 A JPS55161001 A JP S55161001A JP 6827379 A JP6827379 A JP 6827379A JP 6827379 A JP6827379 A JP 6827379A JP S55161001 A JPS55161001 A JP S55161001A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- steel
- metallurgy
- carbon
- atomized
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000843 powder Substances 0.000 title abstract 9
- 229910000831 Steel Inorganic materials 0.000 title abstract 6
- 239000010959 steel Substances 0.000 title abstract 6
- 238000004663 powder metallurgy Methods 0.000 title abstract 5
- 238000004519 manufacturing process Methods 0.000 title 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 4
- 239000001257 hydrogen Substances 0.000 abstract 3
- 229910052739 hydrogen Inorganic materials 0.000 abstract 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 2
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- 229910000851 Alloy steel Inorganic materials 0.000 abstract 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 238000005261 decarburization Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 150000002431 hydrogen Chemical class 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
PURPOSE: To deoxidize steel powder or the like containing oxygen, and improve aptitude as material for powder metallurgy, by adding carbon powder, as required, to atomized steel powder or atomized alloy powder containing oxygen, and heating in nonoxidizing atmosphere containing hydrogen by 4% or less.
CONSTITUTION: Low carbon steel or alloy steel is pulverized into fine powder by atomizing method to produce material for powder metallurgy. At this time, since oxide film is formed on the surface of atomized steel powder or the like, it becomes inadequate as material for powder metallurgy. To avoid this, the powder is heated to 600W1,300°C in nonoxidizing gas atmosphere containing hydrogen by 4% or less, and is deoxidized by the catalytic action of hydrogen, using the carbon contained in the steel as reducing agent. In order to prevent decarburization, when adding carbon powder, the heating temperature is set to 700W1,300°C, and the carbon content added should be less than 1%. As a result, steel powder or alloy powder free fromoxide film, best suited as material for powder metallurgy may be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6827379A JPS55161001A (en) | 1979-05-31 | 1979-05-31 | Production of steel powder for powder metallurgy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6827379A JPS55161001A (en) | 1979-05-31 | 1979-05-31 | Production of steel powder for powder metallurgy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55161001A true JPS55161001A (en) | 1980-12-15 |
| JPS6227121B2 JPS6227121B2 (en) | 1987-06-12 |
Family
ID=13368976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6827379A Granted JPS55161001A (en) | 1979-05-31 | 1979-05-31 | Production of steel powder for powder metallurgy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55161001A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10138744B2 (en) | 2012-01-13 | 2018-11-27 | Borgwarner Inc. | Turbocharger with variable turbine geometry having grooved guide vanes |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS644729U (en) * | 1987-06-29 | 1989-01-12 |
-
1979
- 1979-05-31 JP JP6827379A patent/JPS55161001A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10138744B2 (en) | 2012-01-13 | 2018-11-27 | Borgwarner Inc. | Turbocharger with variable turbine geometry having grooved guide vanes |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6227121B2 (en) | 1987-06-12 |
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